var speed = 2;
var page = 0;
function init(){
  var el = document.getElementById("rollingadd");
  el.style.overflow = 'hidden';
  scrollFromBottom();
  
}
function nextpage(){
    page = page+1;
    callajaxPage(page)
}

var go = 0;
var timeout = '';
var prevval;
var start = 0;
function scrollFromBottom(){

  clearTimeout(timeout);
  var el = document.getElementById("rollingadd");
 
  if(el.scrollTop >= el.scrollHeight-150){
    el.scrollTop = 0;
   // //alert('i m stopped');
  };
  //  alert('i m old ' + el.scrollTop );  
    prevval =      el.scrollTop;
  el.scrollTop = el.scrollTop + speed;
  if(el.scrollTop == el.scrollTop + speed ) {
      //alert('i m same');
  }
  //alert('old ' + prevval + " == new "  + el.scrollTop );
      
    if(start == 0) 
    {           
        //alert('start is 1');
        if(prevval == el.scrollTop) {
        
        } else {
            //here started changes
            start = 1;
        }
    }else {
           if(prevval == el.scrollTop) {
               //alert('time for next page!!!'); 
               start=0;
               nextpage();
           }
    }
    
  if(go == 0){
    timeout = setTimeout("scrollFromBottom()",50);
  };
      //  alert(el.scrollHeight + " == " + el.scrollTop );
       
}

function stop(){
  go = 1;
}

function startit(){
  go = 0;
  scrollFromBottom();
}